For the humidity question, I believe humidity should be about 65% and I can get that in my plant room by shutting the door.

When you have lots of plants and you have to water them, this makes humidity.

I wouldn't worry about humidity too much. I know that people in Arizona which has extremely dry temps and humidity can grow violets very well.

I would put newly planted leaves in a plastic bag, but not my plants. You can also spray them as often as you like using HOT water. Hot water becomes very cool to your hand if you spray it and the violets feel the same temperature so begin with HOT water.

Nancy

Yeah, never had to worry about maintaining humidity to root leaves.

I wouldn't pay attention to the humidity level in terms of numbers. If the inside of your bag is too foggy, and especially if you are seeing droplets of water inside the bag, the growing medium may be too wet and the leaf could rot. What works for me is to moisten the growing medium, not soak it, and then cover it with a plastic bag. You can check it every week or so to see if it's drying out, and add a little water if necessary. Works for me every time.

12 years old question gets revived... Nancy Robitaille is already growing violets in a Violet Heaven...she was one lovely lady... helped a lot of newbies...